JP2003268807A - Slewing type working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure a housing place, where a vandalism guard for preventing the damage of a cab is housed, in a slewing type working machine having a small space on a layout. <P>SOLUTION: The cab 17 is loaded on a superstructure 14 rotatably installed on an understructure. The superstructure 14 has a revolving frame 31 with a hollow beam member 41 using the outside end as an opening end and a fender 51 mounted around the frame 31. An opening section 52 is formed to the fender 51 at a place corresponding to the opening end of the beam member 41, a door 53 is secured into the opening section 52 in a freely openable manner, and a guard-member housing space section 65 is formed to the cavity section of the beam member 41 on the inside of the door 53. The foldable vandalism guard 66 protecting a glass window for the cab 17 is housed in the space section 65. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revolving type working machine having a guard member for preventing cab damage.

[0002]

2. Description of the Related Art A hydraulic excavator as a revolving type working machine is provided with an upper revolving structure rotatably provided on a lower traveling structure.
A cab and a front working device are mounted on the upper swing body.

The cab has a glass window, and the glass window may be damaged by an impact caused by a mischief from the outside. Therefore, for security of the hydraulic excavator, as shown in FIG. A foldable vandalism guard 66 as a guard member for preventing cab damage is installed along the outer side surface of the glass window so as to cover the glass window from the outside so as to protect the glass window.

The vandalism guard 66 is a hinge 66a.
Multiple guard plates 66b such as iron plates connected by
The left and right sides of the are fixed to the receiving member on the cab side by screws 66c.

The bandarism guard 66 is stored in a storage space secured in the front side of the storage box, the front side of the radiator and the oil cooler in the conventional standard machine.

[0006]

However, in a model having a small layout space, such as a small swivel machine having a small rear end radius of the upper swivel body, a storage place for storing the above vandalism guard 66 is secured. Has become difficult.

The present invention has been made in view of the above circumstances, and an object of the present invention is to secure a storage space for storing a guard member for preventing damage to a cab in a swing type working machine having a small layout space. Is.

[0008]

According to the invention described in claim 1, an undercarriage, an upper revolving structure rotatably provided on the lower traveling structure, a cab mounted on the upper revolving structure, and The upper revolving structure is provided with a working device, and the upper revolving structure is revolvingly driven with respect to the lower traveling structure and has a hollow beam member whose outer end is an open end, a fender mounted around the revolving frame, and a beam member. An opening provided in the fender corresponding to the opening end, a door body that is openably and closably provided in the opening, and a guard member storage space provided inside the door body and in an inner space of the beam member. And a guard member for preventing damage to the cab stored in the guard member storage space, the swivel type working machine comprising:
The guard member storage space for storing the guard member for preventing cab damage and the opening and doors on the fender of the upper revolving structure corresponding to the opening end of the beam member, swivel type work with less layout space In the machine, it is possible to secure a storage place in which the guard member can be stored.

According to a second aspect of the present invention, the cab in the turning type working machine according to the first aspect has a glass window, and the guard member is a foldable vandalism guard that protects the glass window. With the guard member storage space that effectively utilizes the inner space of the beam member of the swivel frame, it is possible to secure a storage place for the folded vandalism guard even in a swivel type working machine with a small layout space.

According to a third aspect of the present invention, the revolving type working machine according to the first or second aspect is a small revolving machine having a small rear end radius of the upper revolving structure, and a small space for layout. Even in the case of a revolving machine, the fender of the upper revolving structure is provided with an opening and a door, so that the inner space of the beam member of the revolving frame, which has never been used in the dead space, can be stored in the guard member storage space. As a result, a space for accommodating a guard member for preventing cab damage can be secured.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail with reference to the embodiment shown in FIGS.

FIG. 2 shows a hydraulic excavator as a revolving type working machine, in which a sprocket (not shown) is provided at the lowermost portion by a traveling hydraulic motor (not shown) equipped with a pair of crawlers 11 respectively. An undercarriage 12 is provided which moves the airframe by driving the undercarriage.
An upper revolving structure 14 is rotatably provided above the revolving unit 13 driven by a revolving hydraulic motor (not shown).

A front working device 15 for excavation as a working device is mounted on the front part of the upper revolving structure 14, and a glass window 16 is provided on the upper revolving structure 14 at one side of the front working device 15. A cab 17 that forms an operator's cab is mounted, a counterweight 18 for balancing the mass with the front working device 15 is mounted on the rear part of the upper swing body 14, and the front working device 15 and the counterweight 18 are combined. A power unit 19 such as an engine is mounted on the upper revolving structure 14 between them.

In the front working device 15, a base end portion of a boom 21 is rotatably supported by an upper revolving structure 14 so as to be vertically rotatable. The arm 23 is rotatably supported, and a bucket 23 is rotatably supported on the tip of the arm 22 so as to be rotatable in the opening / closing direction.

The boom 21 is vertically rotated by a boom hydraulic cylinder 24 provided between the boom 21 and the upper swing body 14, and the arm 22 is moved by an arm hydraulic cylinder 25 provided between the boom 21 and the boom 21. Rotated in and out, bucket 23
Is rotated in the opening / closing direction by a bucket hydraulic cylinder 26 and a linkage 27 provided between the arm 22 and the arm 22.

This hydraulic excavator is a small swing machine in which the rear end radius of the upper swing body 14 is formed so small that the upper swing body 14 can swing on the lower traveling body 12.

As shown in FIG. 3, the upper swing body 14 is
It has a revolving frame 31 which is revolvingly driven with respect to the lower traveling body 12, and this revolving frame 31 has a pair of main frame plates 32 welded to the center in the front-rear direction.

At the center of the front part of the swing frame 31, the boom 21
A boom fitting groove 33 for avoiding interference with the base end of the is formed in a concave shape and surrounded by a plate 34. A pair of main frame plates facing the boom fitting groove 33
A boom mounting bracket 35 for pivotally supporting the base end portion of the boom 21 and a cylinder mounting bracket 36 for pivotally supporting the base end portion of the boom hydraulic cylinder 24 are provided between the front portions of 32. It is provided.

At the rear of each main frame plate 32,
Counterweight mount for mounting counterweight
37 are welded together. Bolt insertion holes 38 for inserting bolts (not shown) for fixing the counterweight 18 are provided in these counterweight mounts 37.
Are provided respectively.

Between the boom mounting bracket 35 and the counterweight mounting portion 37, an engine mounting portion 39 for mounting an engine is provided, which is a pair of main frame plates 32.
It is welded to.

A flat beam member 41 is welded to the swing frame 31 on one side of the boom mounting bracket 35.
A pair of cab mount portions 42 and a pair of cab mount portions 43 for mounting the cab 17 are provided on the upper surface of the beam member 41 and the front end portion of the swing frame 31 on one side of the boom fitting groove 33. It is welded.

Plates 44 and 45 are welded between the cab mounts 42 and 42 on the beam member 41 and between the cab mounts 43 and 43 on the front end, respectively, and these plates 4
Between 4 and 45, a piping / wiring area 46 for partitioning pilot hydraulic piping drawn into the cab 17, electric wiring, etc. is formed.

A hydraulic oil tank mount 47 for mounting a hydraulic oil tank is provided on the revolving frame 31 on the side opposite to the beam member 41.
Further, a fuel tank mount portion 48 for mounting the fuel tank is installed, and is surrounded by a plate 49.

As shown in FIGS. 1 and 2, a fender 51 is mounted around the revolving frame 31, and an opening 52 is provided in the fender 51 at a position corresponding to the rear portion of the cab 17, and this opening is provided. One side of a door 53 as a door body is attached to the door 52 by a hinge 54 so as to be openable and closable. This door 53
A keyhole (not shown) is provided on the other side of the door, and the door 53, which is closed flush with the fender 51, can be locked.

As shown in FIG. 1, a storage space 55 is provided inside the door 53, and a tool box 56 as a small item, a grease gun 57, a washer tank 58, and a controller are provided in the storage space 55. The attachment controller 59 is stored and positioned and fixed by a fixing metal fitting (not shown).

The grease gun 57 is arranged above the storage space 55, and has a tool box 56 and a washer tank 58.
Are arranged below the grease gun 57, and the attachment controller 59 is arranged on the beam member 41 at the back of them.

The tool box 56 is a tool box for storing various tools such as a spanner and a hammer, and the grease gun 57 is
The washer tank 58 is a manual pump for filling the mechanical rubbing part with grease, and the washer tank 58 is a container for the cleaning liquid supplied to the wiper attached to the glass window 16 of the cab 17, and can store two types of large and small. is there.

In addition to the main controller for controlling the main control valve of the hydraulic circuit, the attachment controller 59 is equipped with an attachment such as a hydraulic breaker, a hydraulic crusher or the like at the tip of the arm 22 instead of the bucket 23. At this time, it is a controller installed to control the operation of these attachments, and it is necessary to open the door 53 in order to confirm the indicator of the controller 59 for this attachment.

On the other hand, in the pipe / wiring area 46 provided in most of the space below the cab 17, the cab platform is provided.
Pilot hydraulic piping 63 drawn out from the inside of the cab 17 through the tubular portion 62 attached to 61, electrical wiring, etc. are densely packed, so in this piping / wiring area 46, a storage space for small items such as those described above is provided. Do not install 55.

The beam member 41 welded to one side of the revolving frame 31 is a hollow beam member having an open end 64 at the outer end, and the fender corresponding to the open end 64 of the beam member 41. The opening 52 is provided at 51, and the door 53 is provided at the opening 52 so as to be openable and closable.

A guard member storage space 65 is provided inside the door 53 in the inner space of the beam member 41, and in this guard member storage space 65, vandalism as a guard member for preventing cab damage. The guard 66 is stored in a folded state.

The bandarism guard 66 is a foldable shield iron plate which is attached to the outside of the glass window 16 of the cab 17 and protects the glass window 16 from mischief, and accommodates a plurality of different sizes. .

Next, the operation and effect of the illustrated embodiment will be described.

When the vandalism guard 66 is required, the door 53 is opened by the unlocked key of the door 53,
First, the tool box 56 located in the storage space 55 inside the door 53 is taken out, and the vandalism guard 66 is taken out from the guard member storage space 65 inside the beam member 41 at the back.

As shown in FIG. 4, the bandarism guard 66 is installed along the outside surface of the glass window of the cab 17 so as to cover the glass window from the outside. At that time, since the vandalism guard 66 is connected with a plurality of guard plates 66b such as iron plates by hinges 66a, these guard plates 66b are unfolded, and the left and right sides of these guard plates 66b are cab-mounted by screws 66c. It is fixed by screwing to the receiving member on the side.

When the vandalism guard 66 is unnecessary, it is returned to the guard member storage space 65 in the beam member 41, and
Close and lock 53.

As described above, since the fender 51 of the upper swing body 14 is provided with the opening 52 and the door 53 at the position corresponding to the rear portion of the cab 17, and the storage space 55 for small articles is provided inside the door 53, In a rotary work machine with a small layout space, it is possible to secure a space for storing small items such as the tool box 56, the grease gun 57, the washer tank 58, and the attachment controller 59.

The inner space of the beam member 41 of the swivel frame 31 is used as a guard member storage space 65 for storing the vandalism guard 66, and the upper swivel body is associated with the opening end 64 of the beam member 41.
Since the fender 51 of 14 is provided with the opening 52 and the door 53, it is possible to secure a storage place for storing the vandalism guard 66 in a swing type working machine with a small layout space.

That is, by providing the opening 52 and the door 53 in the fender 51 of the upper revolving structure 14, the inner space of the beam member 41 of the revolving frame 31 which has not been used in the dead space in the past is guarded. A small swing type working machine that can be effectively used as a storage space section 65 and has a small layout space, can secure a storage place for storing the folded vandalism guard 66, and a small swing type with a small layout space. This is an extremely effective use of space for the machine.

The present invention can be applied not only to a hydraulic excavator for excavating with the bucket 23, but also to a working machine in which a hydraulic breaker, a hydraulic crusher and the like are mounted on a machine body common to the hydraulic excavator.

[0041]

According to the first aspect of the invention, the inner space of the beam member of the revolving frame serves as a guard member housing space for housing the guard member for preventing cab damage, and corresponds to the opening end of the beam member. Since the opening and the door are provided in the fender of the upper swing body, it is possible to secure a storage place in which the guard member can be stored in the swing type working machine having a small layout space.

According to the second aspect of the invention, due to the guard member storage space that effectively utilizes the inner space of the beam member of the swivel frame, the folded vandalism is achieved even in a swivel type working machine with a small layout space. A storage place for the guard can be secured.

According to the third aspect of the present invention, even a small turning machine having a small layout space can be used in the dead space in the past because the fender of the upper turning body is provided with the opening and the door. The inner space of the beam member of the revolving frame, which has not been provided, can be effectively used as a guard member storage space, and a space for storing the guard member for preventing cab damage can be secured.

[Brief description of drawings]

FIG. 1 (a) is a plan view of a main part showing an embodiment of an upper swing body of a swing type working machine according to the present invention, and FIG.
It is a front view showing an example of storage of a vandalism guard stored in the guard member storage space.

FIG. 2 is a perspective view of the swivel work machine of the above.

FIG. 3 is a perspective view showing a revolving frame of the revolving type working machine.

FIG. 4A is a front view showing an example of mounting a vandalism guard on a cab, and FIG. 4B is a side view thereof.

[Explanation of symbols]

12 Undercarriage 14 Upper revolving structure 15 Front working device as working device 16 glass window 17 cab 31 swivel frame 41 Beam members 51 Fender 52 opening 53 Door as a door 65 Guard member storage space 66 Bandarism guard as a guard member

Claims (3)

[Claims] 1. An undercarriage, an upper revolving structure rotatably provided on the lower traveling structure, and a cab and a working device mounted on the upper revolving structure, wherein the upper revolving structure is the lower traveling structure. A swivel frame having a hollow beam member that is swivel driven to have an outer end as an open end; a fender mounted around the swivel frame; and an opening provided in the fender corresponding to the open end of the beam member. , A door that can be opened and closed in the opening, a guard member storage space that is provided inside the door and in the inner space of the beam member, and a cab damage prevention that is stored in the guard member storage space A swivel type working machine, comprising: 2. The swivel type working machine according to claim 1, wherein the cab has a glass window, and the guard member is a foldable vandalism guard that protects the glass window. 3. The turning type working machine according to claim 1, wherein the turning type working machine is a small turning machine having a small rear end radius of the upper turning body.